The water levels at Pennypack and Frankford regulator outfalls were compared to the water level at the tidal Delaware River.
- Pennypack: none of the regulators is influenced by tides;
- Frankford:
- F07-F11, F23-F25 are influenced by tides, and the boundary condition matches ZN3 pattern;
- F06 showed minimum tide influence;
- F12, F13 did not show any tide influence.
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